/*
 * Copyright (C) 2005-2011 MaNGOS <http://www.getmangos.com/>
 *
 * Copyright (C) 2008-2011 Trinity <http://www.trinitycore.org/>
 *
 * Copyright (C) 2006-2011 ScriptDev2 <http://www.scriptdev2.com/>
 *
 * Copyright (C) 2010-2011 ProjectSkyfire <http://www.projectskyfire.org/>
 * 
 * Copyright (C) 2011 ArkCORE <http://www.arkania.net/>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include "ScriptPCH.h"
#include "naxxramas.h"

#define SAY_GREET           RAND(-1533000, -1533004, -1533005, -1533006, -1533007)
#define SAY_AGGRO           RAND(-1533001, -1533002, -1533003)
#define SAY_SLAY            -1533008

#define MOB_CRYPT_GUARD     16573

const Position GuardSummonPos = { 3333.72f, -3476.30f, 287.1f, 6.2801f };

enum Events {
	EVENT_NONE,
	EVENT_IMPALE,
	EVENT_LOCUST,
	EVENT_SPAWN_GUARDIAN_NORMAL,
	EVENT_BERSERK,
};

enum Spells {
	SPELL_IMPALE_10 = 28783,
	SPELL_IMPALE_25 = 56090,
	SPELL_LOCUST_SWARM_10 = 28785,
	SPELL_LOCUST_SWARM_25 = 54021,
	SPELL_SUMMON_CORPSE_SCARABS_PLR = 29105, // This spawns 5 corpse scarabs on top of player
	SPELL_SUMMON_CORPSE_SCARABS_MOB = 28864, // This spawns 10 corpse scarabs on top of dead guards
	SPELL_BERSERK = 27680,
};

enum {
	ACHIEV_TIMED_START_EVENT = 9891,
};

class boss_anubrekhan: public CreatureScript {
public:
	boss_anubrekhan() :
			CreatureScript("boss_anubrekhan") {
	}

	CreatureAI* GetAI(Creature* pCreature) const {
		return new boss_anubrekhanAI(pCreature);
	}

	struct boss_anubrekhanAI: public BossAI {
		boss_anubrekhanAI(Creature *c) :
				BossAI(c, BOSS_ANUBREKHAN) {
			me->ApplySpellImmune(0, IMMUNITY_EFFECT, SPELL_EFFECT_KNOCK_BACK,
					true);
			me->ApplySpellImmune(0, IMMUNITY_MECHANIC, MECHANIC_GRIP, true);
		}

		bool hasTaunted;

		void Reset() {
			_Reset();

			hasTaunted = false;

			if (getDifficulty() == RAID_DIFFICULTY_25MAN_NORMAL) {
				Position pos;

				// respawn guard using home position,
				// otherwise, after a wipe, they respawn where boss was at wipe moment.
				pos = me->GetHomePosition();
				pos.m_positionY -= 10.0f;
				me->SummonCreature(MOB_CRYPT_GUARD, pos,
						TEMPSUMMON_CORPSE_DESPAWN);

				pos = me->GetHomePosition();
				pos.m_positionY += 10.0f;
				me->SummonCreature(MOB_CRYPT_GUARD, pos,
						TEMPSUMMON_CORPSE_DESPAWN);
			}
		}

		void KilledUnit(Unit* victim) {
			//Force the player to spawn corpse scarabs via spell, TODO: Check percent chance for scarabs, 20% at the moment
			if (!(rand() % 5))
				if (victim->GetTypeId() == TYPEID_PLAYER)
					victim->CastSpell(victim, SPELL_SUMMON_CORPSE_SCARABS_PLR,
							true, NULL, NULL, me->GetGUID());

			DoScriptText(SAY_SLAY, me);
		}

		void JustDied(Unit *) {
			_JustDied();
			instance->DoStartTimedAchievement(ACHIEVEMENT_TIMED_TYPE_EVENT,
					ACHIEV_TIMED_START_EVENT);
		}
		void EnterCombat(Unit * /*who*/) {
			_EnterCombat();
			DoScriptText(SAY_AGGRO, me);
			events.ScheduleEvent(EVENT_IMPALE, 10000 + rand() % 10000);
			events.ScheduleEvent(EVENT_LOCUST, 90000);
			events.ScheduleEvent(EVENT_BERSERK, 600000);

			if (getDifficulty() == RAID_DIFFICULTY_10MAN_NORMAL)
				events.ScheduleEvent(EVENT_SPAWN_GUARDIAN_NORMAL,
						urand(15000, 20000));
		}

		void MoveInLineOfSight(Unit *who) {
			if (!hasTaunted && me->IsWithinDistInMap(who, 60.0f)
					&& who->GetTypeId() == TYPEID_PLAYER) {
				DoScriptText(SAY_GREET, me);
				hasTaunted = true;
			}
			ScriptedAI::MoveInLineOfSight(who);
		}

		void SummonedCreatureDespawn(Creature *summon) {
			BossAI::SummonedCreatureDespawn(summon);

			// check if it is an actual killed guard
			if (!me->isAlive()
					|| summon->isAlive() || summon->GetEntry() != MOB_CRYPT_GUARD)return;

			summon->CastSpell(summon, SPELL_SUMMON_CORPSE_SCARABS_MOB, true,
					NULL, NULL, me->GetGUID());
		}

		void UpdateAI(const uint32 diff) {
			if (!UpdateVictim() || !CheckInRoom())
				return;

			events.Update(diff);

			while (uint32 eventId = events.ExecuteEvent()) {
				switch (eventId) {
				case EVENT_IMPALE:
					//Cast Impale on a random target
					//Do NOT cast it when we are afflicted by locust swarm
					if (!me->HasAura(
							RAID_MODE(SPELL_LOCUST_SWARM_10,
									SPELL_LOCUST_SWARM_25)))
						if (Unit *pTarget = SelectUnit(SELECT_TARGET_RANDOM, 0))
							DoCast(
									pTarget,
									RAID_MODE(SPELL_IMPALE_10,
											SPELL_IMPALE_25));
					events.ScheduleEvent(EVENT_IMPALE, urand(10000, 20000));
					break;
				case EVENT_LOCUST:
					// TODO : Add Text
					DoCast(
							me,
							RAID_MODE(SPELL_LOCUST_SWARM_10,
									SPELL_LOCUST_SWARM_25));
					DoSummon(MOB_CRYPT_GUARD, GuardSummonPos, 0,
							TEMPSUMMON_CORPSE_DESPAWN);
					events.ScheduleEvent(EVENT_LOCUST, 90000);
					break;
				case EVENT_SPAWN_GUARDIAN_NORMAL:
					// TODO : Add Text
					DoSummon(MOB_CRYPT_GUARD, GuardSummonPos, 0,
							TEMPSUMMON_CORPSE_DESPAWN);
					break;
				case EVENT_BERSERK:
					DoCast(me, SPELL_BERSERK, true);
					events.ScheduleEvent(EVENT_BERSERK, 600000);
					break;
				}
			}

			DoMeleeAttackIfReady();
		}
	};
};

void AddSC_boss_anubrekhan() {
	new boss_anubrekhan();
}
